Over recent days the Eriocrania species I collected as mines 10 months ago have begun to emerge and they are well worth a little rearing effort:
Eriocrania cicatricella ex mine on Birch
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Eriocrania semipurpurella ex mine on Birch
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The mines of the various Eriocraniidae will start to appear over the next few weeks (some species earlier than others of course) and I certainly recommend a spot of mine hunting and even a bit of rearing through, they're not that difficult, you just have a long time to wait.